Class: ENVied::EnvProxy

Inherits:
Object
  • Object
show all
Defined in:
lib/envied/env_proxy.rb

Overview

Responsible for anything related to the ENV.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config, options = {}) ⇒ EnvProxy

Returns a new instance of EnvProxy.



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# File 'lib/envied/env_proxy.rb', line 6

def initialize(config, options = {})
  @config = config
  @coercer = options.fetch(:coercer, ENVied::Coercer.new)
  @groups = options.fetch(:groups, [])
end

Instance Attribute Details

#coercer ⇒ Object (readonly)

Returns the value of attribute coercer.



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# File 'lib/envied/env_proxy.rb', line 4

def coercer
  @coercer
end

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/envied/env_proxy.rb', line 4

def config
  @config
end

#groups ⇒ Object (readonly)

Returns the value of attribute groups.



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# File 'lib/envied/env_proxy.rb', line 4

def groups
  @groups
end

Instance Method Details

#[](name) ⇒ Object 



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# File 'lib/envied/env_proxy.rb', line 30

def [](name)
  coerce(variables_by_name[name.to_sym])
end

#coerce(var) ⇒ Object 



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# File 'lib/envied/env_proxy.rb', line 51

def coerce(var)
  coerced?(var) ?
    value_to_coerce(var) :
    coercer.coerce(value_to_coerce(var), var.type)
end

#coerced?(var) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/envied/env_proxy.rb', line 65

def coerced?(var)
  coercer.coerced?(value_to_coerce(var))
end

#coercible?(var) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/envied/env_proxy.rb', line 57

def coercible?(var)
  coercer.coercible?(value_to_coerce(var), var.type)
end

#default_value_of(var) ⇒ Object 



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# File 'lib/envied/env_proxy.rb', line 42

def default_value_of(var)
  var.default_value(ENVied, var)
end

#env_value_of(var) ⇒ Object 



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# File 'lib/envied/env_proxy.rb', line 38

def env_value_of(var)
  ENV[var.name.to_s]
end

#has_key?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/envied/env_proxy.rb', line 34

def has_key?(name)
  variables_by_name[name.to_sym]
end

#missing?(var) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/envied/env_proxy.rb', line 61

def missing?(var)
  value_to_coerce(var).nil?
end

#missing_variables ⇒ Object 



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# File 'lib/envied/env_proxy.rb', line 12

def missing_variables
  variables.select(&method(:missing?))
end

#uncoercible_variables ⇒ Object 



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# File 'lib/envied/env_proxy.rb', line 16

def uncoercible_variables
  variables.reject(&method(:coerced?)).reject(&method(:coercible?))
end

#value_to_coerce(var) ⇒ Object 



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# File 'lib/envied/env_proxy.rb', line 46

def value_to_coerce(var)
  return env_value_of(var) unless env_value_of(var).nil?
  config.defaults_enabled? ? default_value_of(var) : nil
end

#variables ⇒ Object 



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# File 'lib/envied/env_proxy.rb', line 20

def variables
  @variables ||= begin
    config.variables.select {|v| groups.include?(v.group) }
  end
end

#variables_by_name ⇒ Object 



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# File 'lib/envied/env_proxy.rb', line 26

def variables_by_name
  Hash[variables.map {|v| [v.name, v] }]
end